Per Milberg

Per Milberg
Linköping University | LiU · Department of Physics, Chemistry and Biology (IFM)

Adjunct professor

About

210
Publications
54,794
Reads
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7,677
Citations
Introduction
Plant ecologist with a particular interest in applied ecology, especially conservation of species and habitats. Also interested in weeds and seeds, and in natural history in general.
Additional affiliations
June 2008 - June 2010
Sveriges Lantbruksuniversitet
April 2005 - June 2016
Linköping University
Position
  • Professor (Full)
January 1999 - present
Linkoping University
Description
  • http://www.ifm.liu.se/biology/ecology/conservation_ecology/

Publications

Publications (210)
Article
Question: The management of species-rich semi-natural grasslands, a frag-mented and threatened vegetation type in Europe, involves costs. Mowing is expensive and grazing can be difficult to achieve and maintain for logistical rea-sons. Is annual spring burning, which is potentially cheaper than mowing and grazing, a viable management tool for speci...
Article
Full-text available
Many saproxylic species are threatened in Europe because of habitat decline. Hollow trees represent an important habitat for saproxylic species. Artificial habitats may need to be created to maintain or increase the amount of habitat due to natural habitat decline. This study investigated the extent to which saproxylic beetles use artificial habita...
Article
Full-text available
This study identifies and analyses multiple factors that impact people’s interactions with urban greenspace in Sweden. An unrestricted, self-selected online survey was used to collect the data. The survey questions were related to individual characteristics of respondents, including socio-demographic characteristics, self-reported nature connectedn...
Article
Full-text available
We introduce the AusTraits database - a compilation of values of plant traits for taxa in the Australian flora (hereafter AusTraits). AusTraits synthesises data on 448 traits across 28,640 taxa from field campaigns, published literature, taxonomic monographs, and individual taxon descriptions. Traits vary in scope from physiological measures of per...
Article
Full-text available
Objectives To examine similarities and dissimilarities in patient and family caregiver dyads in their experience of stress, support, and sense of security. Methods 144 patients and their family caregivers participated. Patients were admitted to six Swedish specialist palliative home care units and diagnosed with a non-curable disease with an expec...
Article
Full-text available
Clear-cuts in production forests provide an open, sunny environment, with an abundance of nectar, as well as exposed soil and woody debris. This makes them a potential habitat for several groups of insects that typically use open habitats like grassland, including those species that visit flowers. In the current study, we used colour pan traps to c...
Article
Full-text available
When assessing changes in populations of species, it is essential that the methods used to collect data have some level of precision and preferably also good accuracy. One commonly used method to collect pollinators is colour pan traps, but this method has been suggested to be biased by the abundance of surrounding flowers. The present study evalua...
Article
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We briefly summarize a project exploring clearcuts and how their biodiversity depends on landuse history. Clearcuts that were meadow 150 years ago had more plants, butterflies and burnet moths than sites with forest history. Plants were present as sparse individuals in the forest before cutting. Patterns among hoverflies, bees, wasps were unclear....
Preprint
Full-text available
We introduce the AusTraits database - a compilation of measurements of plant traits for taxa in the Australian flora (hereafter AusTraits). AusTraits synthesises data on 375 traits across 29230 taxa from field campaigns, published literature, taxonomic monographs, and individual taxa descriptions. Traits vary in scope from physiological measures of...
Article
Full-text available
Aim Climate and land use are key determinants of biodiversity, with past and ongoing changes posing serious threats to global ecosystems. Unlike most other organism groups, plant species can possess dormant life‐history stages such as soil seed banks, which may help plant communities to resist or at least postpone the detrimental impact of global c...
Article
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Management of semi-natural grasslands is essential to retain the characteristic diversity of flora and fauna found in these habitats. To maintain, restore or recreate favourable conditions for grassland species, knowledge regarding how they occur in relation to grazing intensity and soil nutrient availability is crucial. We focused on grassland pla...
Article
Full-text available
Management of semi-natural grasslands is essential to retain the characteristic diversity of flora and fauna found in these habitats. To maintain, restore or recreate favourable conditions for grassland species, knowledge regarding how they occur in relation to grazing intensity and soil nutrient availability is crucial. We focused on grassland pla...
Article
Full-text available
Burnet moths (Zygaena spp.) are day-flying Lepidoptera considered indicative of species-rich grasslands. In the present study, our aim was to clarify whether clear-cuts are habitat, supporting habitat or matrix for three species of Zygaena. We did so by sampling these species with sex pheromones on 48 clear-cuts, varying in amount of host and necta...
Article
Full-text available
Pollinating insects are important and therefore, it is important to be able to assess and monitor changes in their abun-dance. Consequently, it is essential that the methods used to collect data have some level of precision and are accurate. In the present study, two commonly used methods: colour pan-traps and sweep netting along transects, were co...
Article
Artificial light is an important and necessary part of urban environments, but light can have substantial direct and indirect effects on populations of various organisms. Urban areas are often situated close to water and thus organisms dependent on water could be especially vulnerable. Trichoptera is one of the most abundant insect orders in freshw...
Article
During the last centuries, land use in Europe intensified, which has led to a drastic decrease in the cover of semi-natural grasslands. In Sweden, much of the lost grasslands was turned into forest. This study investigated if species typical of managed grasslands could be found in coniferous production forests more than 80 years after grassland man...
Article
Many tree species worldwide are suffering from slow or failed natural regeneration with dramatic consequences for biodiversity and ecosystem services. However, it is difficult to disentangle the complex effects of factors influencing regeneration processes on long-lived tree species at large scales. In this study, we use long-term data from the Swe...
Article
Full-text available
Wood-pastures are disappearing rapidly in the eastern Mediterranean basin due to changes in land use. Traditional farming by means of goat husbandry and pollarding has allowed many trees to become old, creating valuable habitats for biodiversity. Developing viable management schemes for habitats of conservation concern require studies aiming at ide...
Article
During the last centuries, land use in Europe intensified, which has led to a drastic decrease in the cover of semi-natural grasslands. In Sweden, much of the lost grasslands was turned into forest. This study investigated if species typical of managed grasslands could be found in coniferous production forests more than 80 years after grassland man...
Article
Full-text available
Context Loss and fragmentation of semi-natural grasslands has critically affected many butterfly species in Europe. Habitat area and isolation can have strong effects on the local biodiversity but species may also be strongly affected by the surrounding matrix. Objectives We explored how different land cover types in the landscape explained the oc...
Article
Full-text available
Both agricultural intensification and abandonment have led to the loss of European semi-natural grasslands. Nature conservation management measures like mowing are essential for preserving the biodiversity of remaining grasslands. However, there are no conclusive results from studies examining effects of different mowing frequencies across Europe....
Article
Full-text available
The sustainable management of unwanted vegetation in agricultural fields through integrated weed control strategies requires detailed knowledge about the maternal formation of primary seed dormancy, to support the prediction of seedling emergence dynamics. This knowledge is decisive for the timing of crop sowing and nonchemical weed control measure...
Article
Transects covering 90 km in an area south of Linköping in the province of Östergötland, SE Sweden, were relocated and reinventoried in 2013 using the same methodology as in the first national forest inventory of 1927. Data for land-use, forest type and species-specific tree sizes were obtained and compared with values from 1927. The results show th...
Article
Full-text available
Species-rich semi-natural grasslands in Europe are a main target for conservation efforts, and alternative methods to the traditional management of mowing or grazing would be welcome due to the difficulties in maintaining these management practices. One such method proposed is burning of grassland vegetation during late winter or spring. To evaluat...
Conference Paper
Full-text available
The Mediterranean basin exhibits a multitude of forest habitats affected by former and current exploitation and management. Recent afforestation programs have resulted in an increase in the proportion of coniferous trees, while Oak stands (Quercus spp), formerly utilized for pollarding, coppicing and grazing, are abandoned or converted into conifer...
Article
Full-text available
Mowing is an important management method for species-rich semi-natural grasslands in Europe. Since mowing is costly, it is important to find a balance between mowing frequency and conservation benefits. We compared vegetation data from eleven field trials situated in southern Sweden that involved two mowing regimes, annually and every third year, a...
Article
Full-text available
Methane (CH4) emissions via emergent aquatic macrophytes can contribute substantially to the global CH4 balance. We addressed temporal variability in CH4 flux by using the static chamber approach to quantify fluxes from plots dominated by two species considered to differ in flux transport mechanisms (Phragmites australis, Carex rostrata). Temporal...
Article
Full-text available
Purpose: This study aimed to study whether a PCCT can influence and change primary healthcare team members' perceptions regarding the palliative care at the end of life they are providing to patients in their own acute wards. Methods: The intervention was a PCCT visiting surgical and internal medicine wards in 1 year. We used a quasi-experimenta...
Article
Questions: Can signs of 19th century grassland management, which can be observed in the flora immediately (2–4 yrs) after clear-cutting in boreonemoral Sweden, still remain 4 yrs later? Do the effects from the time since clear-cutting differ between forest and grassland plant species?. Location: Province of Östergötland, southern Sweden. Methods: T...
Article
Full-text available
Biosphere Reserves aim at being role models for biodiversity conservation. This study focuses on the unsuccessful conservation of waders (Charadrii) on wet grasslands in the Kristianstad Vattenrike Biosphere Reserve (KVBR) in southern Sweden. Predation on nests and young has been proposed as one reason contributing to the decline of waders. We expl...
Article
Full-text available
Old living oaks (Quercus robur) are known as a very species-rich habitat for saproxylic beetles, but it is less clear to what extent such veteran trees differ from an even rarer feature: downed trunks of large oaks. In this study, we set out to sample this habitat, using window traps, with two aims: (1) to describe the variation of assemblages amon...
Data
Appendix S1. Saproxylic species recorded in traps placed on downed trunks of large oaks, their red‐list status (according to Gärdenfors 2010), and their frequency in 40 window traps.
Data
Appendix S2. Saproxylic species included in the contrast between downed trunks of oaks and living veteran oaks.
Article
Full-text available
Synanthedon vespiformis L. (Lepidoptera: Sesiidae) is considered a rare insect in Sweden, discovered in 1860, with only a few observations recorded until a sex pheromone attractant became available recently. This study details a national survey conducted using pheromones as a sampling method for this species. Through pheromone trapping we captured...
Article
Full-text available
Ancient trees are considered one of the most important habitats for biodiversity in Europe and North America. They support exceptional numbers of specialized species, including a range of rare and endangered wood-living insects. In this study, we use a dataset of 105 sites spanning a climatic gradient along the oak range of Norway and Sweden to inv...
Data
Table S2. Categorization of dead wood inhabiting beetles species according to oak association and primary geographical distribution.
Data
Table S1. Location of all 308 oaks from 105 sites sampled for beetles in the present study.
Data
Table S3. Results of backwards stepwise selection of six models all including four predictor variables: Temperature, Precipitation, Oak Circumference and Openness around trees.
Article
Species-rich semi-natural grasslands in Europe are becoming more fragmented and many species that depend on this habitat type are rare and threatened today. Management methods like mowing and grazing are needed to preserve remaining grasslands. Because management is costly it is important to use the most cost-effective as well as the most beneficia...
Article
Full-text available
In a north European context, identifying invasive species is far from trivial because the vegetation has been influenced by human activities for thousands of years. New species have immigrated continuously since the end of the last glaciation, both spontaneously and through direct or indirect help by man. Still, newly immigrated species may be prob...
Article
Full-text available
Fire-favoured insects are difficult to sample except opportunistically after forest fires. Here, we tested if smoke from a small fire could be an efficient way to sample such insects. Insects were sampled over ca. 10 h hours, by hand-picking and netting on screens put up around the fire. Two specimens of the rare and redlisted Hormopeza spp. (Dipte...
Article
Full-text available
The grass trimmer is considered to have a negative effect on the flora of species-rich grasslands, but there is little evidence supporting this notion. Hence, the effect of the grass trimmer on the flora was studied in a field trial in a species-rich meadow in south-eastern Sweden. Odds ratios, contrasting plots mowed using a sickle bar mower or a...
Article
Full-text available
We used data from 11 long-term field trials in grasslands in southern Sweden. We calculated the odds for a species being an indicator of good management, or an indicator of poor management, in spring-burnt plots, grazed plots, and annually mowed plots. Odds ratios contrasting spring-burnt plots with grazed or mowed plots were subjected to meta-anal...
Data
Appendix S1. Descriptions of the traits used in the study.
Article
Full-text available
Mowing of semi-natural grasslands is an important management method to maintain the conservation value and species-richness of this habitat. Mowing using cutting instruments, e.g. sickle bar mowers, is thought to be superior by practitioners compared with other mechanical instruments that tears off the plant material, e.g. grass trimmers. However,...